Instrumentation Study on Solar Energy Conversion system into Hydrogen Using Low Temperature Reactive Ceramics

低温反应陶瓷太阳能制氢系统的仪器化研究

• 批准号: 10358010
• 负责人: TAMURA Yutaka
• 金额: $ 16.58万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10358010/
• 关键词: Elliptic mirror; Boundouard reaction; Conversion efficiency; Water spilitting; Hydrogen evolution; Solar furnace; 低温動作型; 集光太陽エネルギー; 水素エネルギー; 二相分解反応性セラミックス; Na(Mn_1; _3,Fe_2; _3)O_2; 非球面反射鏡; フレネルレンズ; 太陽反応炉

Converting solar thermal energy to hydrogen energy is expected to be an innovative method for solar energy utilization in the next century because theoretical conversion efficiency of concentrated solar thermal/chemical energy is up to 70%.Concentrated solar energy/hydrogen energy converter of the low-temperature operation type was constructed in order to utilize heat/chemical energy conversion system using the low temperature reactivity ceramics which has been established until now, and the conversion efficiency of solar energy to hydrogen energy in Japan (Tokyo) was measured by using this equipment.When the Boudouard reaction was performed using the beam down concentrator with an elliptical mirror, the temperature of about 1000℃ was stably obtained, and ca. 50% of COィイD22ィエD2 was reacted to generate CO. As the results of the CO generation rate, it is demonstrated that solar energy of 7 W (max : 10 W, conversion efficiency : 30%) is converted to chemical energy. Thus, this concentrator is suitable for the solar thermochemical process, and in addition, solar/chemical energy conversion efficiency can be obtained up to 50% (theoretical value : 80%) by improvement of the equipment.Water splitting reaction by FeィイD23ィエD2OィイD24ィエD2/NaィイD22ィエD2COィイD23ィエD2/HィイD22ィエD2O system was also carried out using the solar concentrator. In the XRD pattern of the reaction product, the peaks of NaFeOィイD22ィエD2 was observed, indicating that the reaction proceeded. The amount of generated hydrogen is almost correspondent to that of magnetite putting into the reactor, though a part of the stainless steel used as a reaction tube was also reacted to produce hydrogen.Development of cavity-type reactor to obtain high solar/chemical energy conversion efficiency is now in progress.

将太阳热能转化为氢能有望成为下世纪太阳能利用的一种创新方法，因为聚光太阳能/化学能的理论转换效率可达70%.为了充分利用太阳热能/化学能，构建了低温运行型聚光太阳能/氢能转换器使用迄今为止已经建立的低温反应性陶瓷的化学能量转换系统，以及日本（东京）太阳能转化为氢能的效率当采用椭圆镜光束向下集中器进行Boudouard反应时，可稳定地获得1000℃左右的温度，并可获得约1000℃的温度。CO生成率的结果是，7 W（最大：10 W，转换效率：30%）的太阳能被转换成化学能。此外，通过对装置的改进，太阳能/化学能转换效率可达50%（理论值为80%），并利用该太阳能集热器进行了Fe_（23）O_（22）O_（24）O_（22）O_（23）O_（22）O_（24）O_（23）O_（22）O在反应产物的XRD图案中，观察到NaFeO β D22 β D2的峰，表明反应进行。虽然作为反应管使用的不锈钢的一部分也发生了反应，但产生的氢气量几乎相当于投入反应器的磁铁矿的量。为了获得高的太阳能/化学能转换效率，正在开发腔式反应器。

项目成果

玉浦 裕: "金属酸化物を用いるソーラハイブリッド燃料生産システム"粉体粉末冶金協会第83回講演大会講演論文集. 232-232 (1999)

Yutaka Tamaura：“使用金属氧化物的太阳能混合燃料生产系统”第 83 届粉末冶金协会会议记录 232-232 (1999)。

玉浦 裕: "集光太陽エネルギーの化学エネルギー変換(21)石炭ガス化溶融炭酸塩太陽炉のエネルギーの変換効率" 日本化学会第76春季年会講演予稿集. (1999)

Yutaka Tamaura：“聚光太阳能的化学能量转换（21）煤气化熔融碳酸盐太阳能炉的能量转换效率”日本化学会第76届春季年会论文集（1999）。

T. Sano, Y. Hosokawa, H. Amano, M. Tsuji, Y. Tamaura: "Stabilized wustite formed from Zn(II)- and Mn(II)-wustite below 575°C"J. Magnetics Soc. Jpn.. 22(S1). 58-59 (1998)

T. Sano、Y. Hosokawa、H. Amano、M. Tsuji、Y. Tamaura：“在 575°C 以下由 Zn(II)- 和 Mn(II)- 方铁体形成的稳定化方铁体”Jpn. 22（S1）58​​-59（1998）。

辻 正道: "イオン交換等温線に基づく熱力学および分配パラメータの評価" 日本化学会第76春季年会講演予稿集. (1999)

Masamichi Tsuji：“基于离子交换等温线的热力学和分配参数的评估”日本化学会第 76 届春季年会论文集（1999 年）。

Yutaka Tamaura: "Thermodynamic evaluation of water splitting by a cation excessive (Ni, Mn) ferrite" Int.J.Hydrogen Energy. 23. 1185-1191 (1998)

Yutaka Tamaura：“阳离子过量（Ni，Mn）铁氧体水分解的热力学评估”Int.J.Hydrogen Energy。